Maintenance Guide; Tightening Torque - ABB UZE Repair Manual

Fig. 2. Location of rating plate.

1.5 Maintenance guide

Inspection and overhaul of the UZ-type on-load tap-changer is carried out according to the
instructions in the Maintenance Guide. Contact replacement is also described in the Main-
tenance Guide. Since references are made to the Maintenance Guide, you will need the
Maintenance Guide.

1.6 Tightening torque

The following tightening torques are recommended:
if not otherwise is stated in this guide.
1ZSE 5492-128 en, Rev. 4
1 Introduction
Rating plate
fm_00102
M6, 10 Nm ±10 %
M8, 24.5 Nm ±10 %
M10, 49 Nm ±10 %
M12, 84 Nm ±10 %
11